Improv Everywhere at the neighborhood supermarket

Just back from the Casino supermarket (that's the name of the chain), where I witnessed an Improv Everywhere-type happening, with people "spontaneously" dancing in the aisles. Fun!

Started out with this one crazy-looking woman in the chocolate section. She looked crazy, so why not? Then saw a few more young women dancing. The music was quite bopping (All I Want for Christmas Is You), but still... After a commercial break, a slow came on, and a couple of girls started dancing, until this woman came by and made the "cut" signal with her fingers. Party pooper!